Ever since he was assigned to manage the pill quotas for the Second-Grade Alchemists, he had received high-quality pills just a few times.
What is a high-quality pill?
A high-quality pill does not simply have a pill pattern.
Regular pills, during the process of refinement, may still contain impurities which are not completely removed, resulting in a minor amount of remaining impurities.
When a Martial Artist ingests such a pill, not only is the speed of refining it slow, but the body can also accumulate toxicity from the pill.
However, a high-quality pill has almost all its impurities refined away. It's not only easier for Martial Artists to refine, but its toxicity is also relatively less, hence it doesn't easily increase a Martial Artist's resistance to medicine.
Among Second-Grade Alchemists, there are those who can refine high-quality Qi Combining Pills as well as other Second-Grade pills.